Poster of Cast and Crew in The Flash - Season 3 - Episode 20 - I Know Who You Are

The Flash - Season 3 - I Know Who You Are (Episode 20)

Plot: Barry and the team meet Tracy Brand, a scientist, who may be the key to stopping Savitar. Unfortunately, Killer Frost is also after Tracy so Team Flash must battle their old friend, which proves to be particularly difficult for Cisco
Episode Aired On:
Tuesday, May 2 2017
7 years ago